What is the most expensive type of floor tile?

The most expensive type of floor tile is typically made from natural stone, with options like marble or rare types of granite often commanding the highest prices. High-end ceramic tiles, especially those featuring intricate designs or handmade craftsmanship, can also be quite costly. Additionally, luxury materials like onyx or porcelain tiles with advanced technology and finishes can exceed the cost of traditional stone tiles. Overall, the price can vary significantly based on rarity, quality, and design intricacies.